Embossing sheet metal



"May 30, 1933- o. M. PANNIER EIBO-SSING SHEET METAL Filed Sept. 26, 1931 2 Shows-Sheet l m m w .T A

May 30, 1933.

o. M. PANNIER ,9 2,158

EMBOSSING SHEET METAL Filed Sept. 26, 1931 2 Sheets-Sheet 2 J5 ky-JS Z7 jafi'j J5 19 k9 FANQHER .2 .29 J6 J5 F .77

is J6 9 1a BY -T I .4446) ATTORNEY.

ented May 30, 1933 UNITED STATES PATENT o ricE OSCAR M. PANNIER, OF KILIBUCK TOWNSHIP, ALLEGHENY COUNTY, PENNSYLVANIA ASSIGNOR TO PANNIER BROTHERS STAMP COMPANY, OF PITTSBURGH, PENNSYL- VAN IA, A CORPORATION OF PENNSYLVANIA EMBossIive SHEET M TAL Application filed September 26, 1931. Serial No. 565,231.

deforming male and female dies. These may be of metal having corresponding projecting and recessed portions or of individual type members and a co-acting matrix, or other equally expensive and complicated means whereby to stamp the blank conformably when subjected to pressure between such pair of male and female members.

In my present improvement I utilize a pair of sheet metal embossing dies which themselves have been first deformed by subjection to pressure between deforming male and female type or other equivalent means so as to produce in the sheet metal coacting and interfitting male and female characterforming dies.

The sheet metal embossing dies thus formed of suitably strong and resistant metal are then used when suitably mounted, as embossing elements on interposed sheet metal blanks.

In a prior patent of lVilliam J. Pannier, Jr., No. 1,856,928 is shown and described a construction in which the members of a pair of sheet metal die members are constructed and adapted for mounting in" opposing heads, one being relatively movable toward the other, for operation on an interposed sheet metal blank. In such construction the stamping members are provided with lateral flanges for insertion and holding engagement at the edges of the head and base member of a stamping or embossing machine or press, and of constructions facilitating proper placement and prevention of mist-aka In my present invention the stamping sheet metal members are continuously plane or flat, except as'to the projecting and receiving stamping characters, and are otherwise differently formed at their opposite side or end portions, for registering engagement with cooperating guiding and limiting abutments and flanges whereby to positively ensure proper placement of each member in its appropriate head or base.

In the drawings showing one preferred embodiment of the invention:

Fig.1 is a perspective view showing the mounting ofthe stamping plate on the under side of its operating head;

Fig. 2 is a similar View showing the lower coacting stamping member'similarly, mounted on the upper face of its supporting base;

Fig. 3 is a partial vertical section on the line IIIIII of Fig. 1;

Fig. 4 is a'transverse vertical section on the line IVIV of Fig 2 and showing the upper head and stamping memberin operative relation thereto in closed position;

Fig. 5 is a plan view of the lower stamping plate;

Fig. 6 is a similar View of the upper stamping plate.

Referring to the drawings, A represents a plate holding base in operative relationship to the lowerreciprocable head B of a stamping or embossing machine or press, or in reverse arrangement as may be preferred.

Slidably or otherwise mounted in head A, as by tongue and groove engagement 2, for easy placement and removal, is the upper co acting pressing head 01. The lower stastionary supporting anvil or base member head I) is fixedly mounted on and secured to the base B by any suitable means.

' At the rear lower edge of head a is an inwardly extending fixed flange 3, while at the opposite orfront edge is a similar flange 4:extendin'g inwardly from a holding plate 5. Plate 5 is normally retracted by one or more internal springs 21 acting on connecting pins 22 and provided with a withdrawal button or handle 6. Said flanges are adapted toengage oppositeinterfitting edge portions of the upper-stamping plate C for firm holding thereof.

In a similar manner the lower base b is provided at the endmost portions of its rear upper edge with inwardly extending flanges 7 for holding engagement of corresponding portions of the lower stamping member D, while arranged along the front endmost upper edge portions are similar flanges 8 extending inwardly from a spring-retracted head 9 having a projecting button or handle 10. Bar 9 is cut out for clearance along its upper middle edge portion as at 11 for facilitating insertion of the lower stamping 13 are similarly located," for engagement with. he r po din ansiflalis d t portions of the lower stamping member D.

For the purpose of providing a somewhat resilient cushion mounting for the female one of tlie stampin'g platemembers, as C, I utilize a bedding or base 14 of sheet rubber or the like, against which the iplate C bears so as to': provide interposing resistance between it and its mounting head it. Such bedding maybe itself: of a shape corresponding to the general outline o'f its superimposedmember C,or may be provided with a mounting sheetmetal base "of such form, and adapted te interlit with the flanges and studs in'the same manner.

As clearly shown Figs. 5. and. 6 the stampingjplates D. and C are of; different formation, theplate D having atits corners extended portions 15 adapted to interfitbeneath the flanges 7 and 8, while the upper plate C is provided at its n iddle portion i te s ons 6 t h am e ierai k n f e e m Purpos o a es and 8, Plate Dis correspondingly recessed inwardly as at l? and. plate Q is alternately recessed as at 18,

The corner angles or sockets 19 between the projecting portions 15 and recess 17 are preferably rounded or fileted as shown, for engagement-with the studs 13. whenin op- I erative position, While the'isimilai angles or sockets 20 of plate Q engage the studs 12. .of

head a. 1 v

By such construction and arrangement the interfitting edges ofthe pair ofjstamping plates are materially different ,in shape, and theopposite edge portions 0f feafli plate are different in dimensions longitudinally. That is to say, the projections 15 along one edge of'plate D are materially shorter than the corresponding projections at the other side, with a fcorresponding difference in length of the recesses 17., In the same manner projection 16 at one edge of plate Q is materially longer than the corresponding projection at the other edge, with" 'corre sponding variatio nin the length of the recesses 18. Each edge portion of each plate is thus m em m h p qpqaee By such construction and arrangement it ividually-jand distinctively difleris rendered impossible to make any mistake in placing the stamping plates in position, either as to upper or lower, or as to front or back portions of each plate, thereby ins'uring proper placement oflboth plates in the machine for registering and operating relationship.

The advantage of. such construction, is that in changing'the plates, the pair ofv plates may be indiscriminately stored and. one set of plates may be taken out of the machine andputaw'ay and substituted by another pair of plates, each of which can only be located in proper position because of the impossibility of being placed otherwise. In this manner delay and.v any especial care in substituting one set of plates for another is avoided and the operatien of changing plates is rendered certain and expeditious.

As in the construction ofthe former application, it will} thus be apparent that. in providing the sheet metal embossing plates Q and D with any desired configuration or character-forming projections and depressions, they are mounted in pairs, one closely against the other and subjected to the deforming action ofthe male type or die member andthe female type or die member, acting onan interposedblank together. Any

desired number of embossing characters may be completely developed onplates and D to comprise the entire subject matter to be stamped-throughout so much of the area of theplates together as will ,transmit to the sheetmetal blanks to be operated upon, the desired, characters.

By means of theabove described construction I am enabled to cheaply and quickly manufacture pairs of sheet metaten bossing diemembers, each having its own individual ,characters or deforming projections and depressions, each of which pairsis' capable of satisfactory and efiiciently embossing several thqus'and of the thin sheet metal blanks acted upon,

I therebyavoid and save the expense of making a large number of heavy dies in the manner now usually employed, and when worn out, any such particular pair of em bossing plates maybe readily reproduced in the same; manner as above described, using blanks having the characteristic edge format onabove' described or any alternative arrangement A thereof.

The advantages of ,theinvention and its adaptation toja great variety and range of work will bereadily understood and appre- It may be ously V efficient and operative, while the 'continuously flat form of the platesfacilitates economical st'o'ragei The 'invent'ipn is' in .no

.7. way llmited as to size, design, or other particular features described and illustrated, and may be changed or varied by the skilled mechanic in adapting it to its intended use within the scope of the following claims.

What I claim is:

1. A pair of continuously plane sheet metal embossing plates having registering male and female deformations respectively, each plate being provided at one of its edge portions with an individual and distinctive abutment-engaging formation for placement location on a plate holder having arresting abutments out of register with a companion plate holder.

2. A pair of continuously plane sheet metal embossing plates having registering male and female deformations respectively, one plate being provided at one of its edge portions with an individual and distinctive projecting and receding abutment-engaging formation alternating with and difl'erent from similar projecting and receding portions on its other edge, the other companion plate having diflerently spaced similar projecting and receding formation for registering placement location on a plate holder.

3. A pair of continuously plane sheet metal embossing plates having registering male and female deformations respectively each plate being provided at one of its edge portions with an individual extended and receded abutment-engaging formation different from its other extending and receding edges and from the holding edges of its companion plate for placement on an upper and lower plate holder, whereby one of said plates is located in registering relation to its companion plate.

4. A pair of continuously plane sheet metal embossing plates having registering male and female deformations respectively, one plate being provided at its opposite edges with alternating outermost extending and inner receding portions with intervening shoulders for limiting engagement with arresting abutments of a plate holder, the other plate having outermost receding portions and inner extending portions for identification of each plate of a pair.

5. In combination with the stamping plate holder of a press having longitudinally spaced abutments and a retaining flange at one edge portion, and a spring-retracted holding flange at the other edge portion, a stamping plate having similarly spaced abutment-engaging shoulders and lateral extensions engageable by said flanges.

6. In combination with the stamping plate holder of a press having longitudinally spaced abutments and an inwardly extending retaining flange at one edge portion and a movable retaining flange at the opposite edge portion of the plate holdei', a stamping plate having similarly spaced abutment-engaging shoulders and oppositely extending portions engageable with said flange.

7 In combination with the stamping plate holder of a press having longitudinally spaced abutments and an inwardly extending retaining flange at one edge portion and difierently spaced abutments and a movable flange at another edge portion, a stamping plate having correspondingly spaced abutment-engaging shoulders and extending portions at corresponding edges engageable with said abutments and flanges.

8. In combination with the stamping plate holder of a press having longitudinally spaced abutments and an inwardly extending retaining flange at one edge portion and differently spaced abutments and a spring-retracted flange at another edge portion, a stamping plate having correspondingly spaced abutment-engaging shoulders and extending portions at corresponding edges engageable with said abutments and flanges.

9. In combination, a flat plate supporting base having at opposite sides a pair of nonregistering abutments and a fixed and movable retaining flange respectively, a co-operating plate holder having a similar pair of non-registering abutments out of register with those of the base, and a fixed and movable flange respectively, and a pair of stamping plates each having correspondingly located abutment-engaging shoulders and flange-engaging portions.

10. In combination, a flat plate supporting base having at opposite sides a pair of nonregistering abutments and a fixed and movable retaining flange respectively, a co-operating plate holder having a similar pair of non-registering abutments out of register with those of the base, and a fixed and movable flange respectively, and a pair of stamping plates provided with co-operati'ng stamping deformations and having correspondingly located abutmenteengaging shoulders and flange-engaging portions.

In testimony whereof I hereunto aflix my signature.

OSCAR M. PANNIER. 

